Hoisting and conveying machine



(No Model.) 2 Sheets-Sheet 1.

A. E. BROWN.

HOISTING AND CONVEYING MAGHINE. No. 390,560. Patented 0 2, 1888.

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A. E. BROWN.

HOISTING AND CONVEYING MACHINE.

N0. 390,560. Patented Oct. 2, 1888.

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SPECIFICATION forming part of Letters Patent No. 390,560, dated October2, 1888.

Application filed March 15, 1887. Serial No. 231,?21. (No model.)

T 0 all whom, it may concern.-

Be it known that I, ALEXANDER E. BROWN, of Cleveland, in the county ofOuyahoga and State of Ohio, have invented certain new and usefulImprovements in Hoisting and Convey ing Machines; and I do herebydeclare that the following is a full, clear, and exact descriptionthereof, reference being had to the accompanying drawings, making partof this.

application.

Myinvention relates to certain new and use ful improvements in hoistingand conveying machines, some or all of which improvements, thoughspecially adapted for use in an apparatus designed for hoisting andconveying the material in digging ditches for sewers, &c., may be usedin connection with hoisting and conveying apparatus for other purposes.

The machine or apparatus made the suhj ect of this application belongsto that well-known type in which there is a carriage that travels uponsome sort of elevated tramway or track, the said carriage being moved inboth directions by an endless cable, and in which there is also anothercable, generally designated as the hoist-rope, that is secured to afixture at one end and has its other end wound upon the usual drum ofthe hoistingengine located in the engine-house of the structure.

My present invention consists in certain novel features of structure inthis type of machine, which features will be hereinafter more fullyexplained, and will be most particularly pointed out and defined in theclaims of this specification.

To enable those skilled in the art to which my invention relates to makeand use the same, I will now proceed to more fully describe the severalfeatures of my improvement, referring by letters of reference to theaccompanying drawings, which form part of this specification, and inwhich I have shown my invention carried out in that form which is thebest known to me, and in which I have so far successfully practiced it.e

In the drawings, Figure l is a perspective view of an elevatedsingle-track tramway and the appliances thereof, such as I have alreadypraetically used (in the hoisting and conveying or" material in theconstruction of sewers) and embracing the several features of my presentinvention. Fig. 2 is a View showing detached or separately, but mountedon the tramway, one of the traveling carriages or machine and the load-sustaining sheaveblock in side View or elevation. Fig. 3 is an end oredge view of the parts shown at Fig. 2. Fig. at is a reverse side Viewof ma chine shown at Fig. 2. Fig. 51s a sectional detail.

hoist-rope y in the customary manner, and which also carries, in theusual manner, a sheave or pulley, over which travels the endless cableE, to which are propcrlyseeured at any desired intervals the carriagesor ma chines F, and of course at the opposite end of the tramway(although not shown in the drawings) are the usual engines and drums andtheir connections, by means of which the end less carriagc'driving cableis caused to travel in the desired manner, and by which also thehoist-rope is taken up and let out, in a manner well known, for thepurpose of hoisting and lowering the buckets or. tubs I, which areconnected in the usual manner with the depending hook of the sheaveblockJ. These sheave-blocks are constructed substantially according to themost approved plan, but have combined with them and the machine orcarriage suitable rubber or other elastic cushions, 0, arranged asshown, so that whenever the sheave-block is elevated or pulled up (toengage with the detaining devices of the machine) said block willcushion at its top edge against the elastic stops 0, thus preventingtheusual jar and consequent sudden strain or shock upon the parts of theapparatus experienced in the use of machines as made previous to myinvention.

The elastic stop or cushion O, I have made in the form of a short rubbertube, which I age, to which is attached the fixed end of the have simplyapplied to the shaft or arbor e of the depending load-hook (I, saidrubber tube having a bore equal to the size of the arbor e and anexternal circumference sufficient, as seen by the dotted circle at Figs.2 and 4, to

leave the requisite space between the lowercurely held in place betweenthe metallic plates of the machine or trolley F at the proper localityto act as a bumper for the sheaveblock J whenever the latter may besuddenly run up slightly above the point necessary to seat it in theload-sustaining hooks d.

d d are the sustaining-hooks,a pair of which is supplied to each of thecarriages or machines, the said hooks being arranged at either side ofthe machine and being secured at their upper ends to a stud or spindle,c, which re- U volves in a suitable bearing-box near the upper part ofthe machine, and having their lower ends made hook-shaped, and adaptedto pass beneath and support the laterally-projecting ends of thesheave-spindle or sheaveblock hubs t at certain times, when it may bedesired to traverse the load carrying machines without undue or materialfriction or strain upon the hoist-rope, which latter, of course, alwayspasses partially around the two U rope-wheels W of the carriage and thesheave (shown by dotted circle at Fig. 2) of the sheaveblock J Each ofthe carriages is provided, as shown, with clamping devices f,which areadapted at their upper parts to grip the traversing rope or cable E, forthe purpose of fastening each of the said carriages to said traversingcable at any point at which it may be desired to makethc connection,forthe purpose ofcausing the said carriage (and its depending bucket) totraverse through any desired portion of the length of the entire run ofthe conveyingmachines. By the use of these clampingjaws f, (which arepivoted at 1 and provided with securing-bolts at 2,) or by othersuitable means for thus securing the carriages F to the traversing ropeE at any desired point, I am enabled in the use of the apparatus to giveany one or more of the machines a limited run back and forth over anyspecified portion of the excavation or work where alone it may bedesired to operate the buckets. This is of advantage in doing certainkinds of work, especially in the digging of sewer-ditches, 850.

Each of the carriages is provided, as shown, with antifrictionsafety-rollers i t, which are arranged in the carriages so as to comeslightly below the lower edge of the trackbeam B, and which serve incase of the presence of any obstruction on the track to prevent thetrack-wheels of the carriage from rising far enough to become derailedor thrown from the track. The carriages are also provided with safety orguard irons or hooks qq, arranged, as shown, to clear but hooking overthe track to such an extent that the guardrollers will not allow thesame to ever lift above the top of the rail. In case the flanges of thetrack-wheels break, the weight of the machine will be held by thesesafety-irons q dropping onto the rails, the hook ends thereof preventingthe machine from swinging sidewise, thus preventing any possibility ofthe carriage falling from the track. These safetyrollers in conjunctionwith the safety or guard irons above the track, I consider of muchimportance in the practical running of the machine.

In a traveling carriage of the kind shown and described mounted totravel upon a single track, and being suspended from the trackwheels, asshown, so that the depending sides or portions of the carriage-frame Fhave to run in close proximity to one of the vertical sides of thetrack-beam B, it frequently happens that by the swaying of the load, orfrom other causes, such portions of the carriageframe are liable to comeinto contact with and rub against said vertical side of the trackbeam,thus causing undue friction with a commensurate waste of the power ofthe driving machinery and more or less injuriousjwear to the parts ofthe apparatus. To overcome this difficulty or objection in the type ofmachine shown, I have provided those portions of the carriage framewhich are apt to come in con-- tact with the vertical side of thetraclobeam with anti-friction rollers or wheels m, which are designed toride against or roll on the vertical surface of the beam B whenever thedepending carriage may be swayed toward the beam, and to avoid allrubbing between the parts, and thus prevent the usual undue wear thereofand all wastage of power.

The load-sustaining hooks (Z (Z may be arranged in an opposite mannerwith reference to any two adjacent carriages in the whole contrivance,as shown by the relative positions of the books at Figs. 2 and 4, sothat,when desired, a pair of machines that are being used simultaneouslycan have their load-sustaining hooks d manipulated by a singleattendant, either separately or simultaneously, at pleasure, by meanssimply of suitable cords or rods attached at their upper ends to thehooks of the two machines, as shown at 0 0, and connected at their lowerends to a common loop, 1?, in such manner that bypulling upon a rod orrope, 20, attached to said loop P, either in one direction or anotherlaterally either one or the other of the hooks may be manipulated, andso that by pulling vertically down upon said rod or rope a both the saidhooks maybe operated at once. The arrows at Figs. 2 and 4 illustrate thedifferent directions in which the attendant may pull the cord at,depending from the ring P, for the purpose of manipulating either one orboth of the loadsustaining hooks (Z at pleasure. This arrangement of thehooks d in a pair of the traveling carriages F, and this means formanipulating said hooks render it exceedingly convenient; andexpeditious for an attendant to manage the machines in pairs withreference toithe lowering and discharging of the buckets or tubs singlyor in pairs, as may be desired. These sustaining-hooks (Z co-operatewith the hoist-blocks and their hoist-rope in such inanner that whilethe loads can be raised and lowered by the engineer no bucket can belowered without the co-operation of the attendant on the ground, and atthe same time the lowering of the bucket by the attendant cannot beeffected except with the knowledge I and cooperation of the engineer,who has to manipulate the h0ist-rope in such manner as to relieve thesustaining-hooks d from the gravity of the load before the attendant canmanipulate the hooks, (in the manner just above explained,) and thuspermit the descent of the loaded bucket; but this feature need not befurther explained herein, as it constitutes no part of thesubject-matter of invention sought to be covered by this application.

Having now so fully explained the several novel features of constructionof my improved apparatus that those skilled in the art can make and usea hoisting and conveying machine embracing either one or all of said features in either the precise'form or forms in which I have used them orin some other adapted to answer the same purpose, and wishing it to beunderstood that the details of construction with reference to any or allof the said novel features may be more or less varied without departingfrom the spirit of my invention, what I claim as new, and desire tosecure by Letters Patent, is-

l. The combination, with the carriage F and 40 the sheave block J, of asuitable cushion or buffer, 0, operating, substantially as specified, toreceive and take up any sudden shock or momentum which might otherwiseinjuriously jar the apparatus upon any sudden and too great elevation ofthe sheave-block.

2. In combination with a pair of traveling carriages, F, thesustaining-hooks (1, arranged as specified, and cords or rods which areconnected to said hooks and are connected together at their lower ends,whereby with the use of some suitable implement an attendant maymanipulate the hooks d of the carriages either separately orsimultaneously, in the manner and for the purposes hereinbeforespecified.

3. In a hoisting and conveying machine of that type which embraces atramway of some sort for the traveling carriages, a hoist-rope anchoredto one end of the tramway, an end less carriage-driving rope, and theclamps or securing devices f on the carriages E, which serve to clampthe carriage to the traversing or driving cable at any desired points,in substantially the manner and for the purposes explained.

In witness whereof I have hereunto set my hand this 31st day of August,1886.

ALEXANDER E. BROWN.

In presence of E. T. ScovILL, CHAS. W. KELLY.

